Disk Defragmenter Crashes when launched

I'm trying to defrag my C:, but every time I start the defragmenter I get the
"Disk Defragmenter NTFS Module has encountered a serious problem and needs to
close..." business. It completes the analysis with no issues, but that's all
I can get out of it. I'm running XP Home and this is my only hard disk. Any
suggestions?

Clean your cache, http://www.stevengould.org/software/cleanup and/or
Disk Cleaner = http://www.robertenfemke.nl/~diskclean
then Boot into safe mode, then go to Start/all programs/accessories/system tools/disk cleanup , and run disk cleanup .
Then enable CHKDSK, = Click your "My Computer" in the start menu, R-Click the C: Drive, go down and click on properties in the drop menu. When the properties folder opens, click on the Tools Tab, The first item in the list is to do CHKDSK. Put a check mark in all the boxes/start/yes/apply/ok . The PC should be rebooted in safe mode to do the scan.

Then run Disk Defrag from safe mode. After booting into safe mode = http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001052409420406 , go to Start/all programs/accessories/system tools/Disk Defragmenter. When you open "Defrag", click on "analyze", and it will tell you if you need to defrag or not.